The Dinan Valved Axle-Back Exhaust is fabricated from 100% brushed, TIG-welded T304 stainless steel and installs at the factory cut points and mounts for OE-precise fitment. It replaces the stock dual slash-cut 90mm (3.5in) tips with massive straight-cut 102mm (4in) double-walled, black ceramic-coated, laser-engraved tips for an unmistakable rear look and a deep growl atypical of the base 4-cylinder turbo platform. Factory valve control is retained, and Dinan's drone-abatement design keeps the cabin composed. The system adds up to +4 HP and +3 lb-ft and installs bolt-on with the included mounting hardware.
| Type | Valved axle-back exhaust |
| Material | T304 stainless steel, TIG welded, brushed |
| Tips | Dual 4in (102mm) straight-cut, double-walled, laser-engraved |
| Finish | Black ceramic-coated tips |
| Valves | Retains factory valve control |
| Power Gain | +4 HP & +3 lb-ft |
| Part Number | D660-0091-BLK |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2019-2024 | BMW | 330i | Base |
| 2019-2024 | BMW | 330i xDrive | Base |
| 2021-2024 | BMW | 430i | Base |
| 2021-2024 | BMW | 430i xDrive | Base |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
